Release power-clutch.



No. 781,523. EATENTED JAN. 31, 190,5. E E E; fEUEER.

RELEASE POWERv CLUTCH; APPLIGTIONFILBD APB. 25, 1904.

l v iwenl'o'n EDM/AR D HUBER n N0. "781,528: Patented January 31, 1905.

' UNITED STATES PATENT OFFICE.

EDWARD HUBER, OE MARION, OHIO.

RELEASE PowERoLuTol-l.

SPECIFICATION forming part of Letters Patent No. 781,523, dated January 31, 1905. Application sied Aprii 25,1904. serai No. 204,820.

T @ZZ ZUh/OWZ' WIMJOWCWW yarm 8, which forms a detent and a releasing Be it known thatl, EDWARD HUBER. a citi device, the said arm extending outwardly tozen of the United States, residing at Marion, ward the periphery of the driven element and in the county of Marion and State of Ohio, provided at its outer end on its rear side with have invented certain new and useful Improvea notch 9. 55

ments in Release Power-Clutches; and .1 do de- Pivotally connected to the plate 3, as at 10, clare the following to be a full, clear, and eX- is an arm 11, which may be of the construcact description ot' the invention, such as will4 tion here shown or of any other suitable conenable others skilled in the art to which it apstruction and to which is pivotally connected IO pertains to make and use the same.' n a clutch-dog 12, as at 13. The dog is pro- 60 My invention is an improved release powervided at its free end, on itsupper side, with a clutch adapted for use in connecting a driven shoulder 14, Aadapted to engage with the shaft to a machine driven thereby and autoshoulder 5 of the driven element, and is promatically effective to cause the machine to vided on its inner side, at its outer end, with stop in the event that it becomes overloaded a shoulder 415, adapted to engage the recess 65 v or clogged up with obstructions; and my in. 9 ofthe detent-arm 8the inner face 16 of vention consists in the construction, combithe said shoulder being shaped to form a cam, nation, and arrangement of devices herein 'as shown. after described and claimed. A An adjusting device, here shown as a bolt 2O In the accompanyingdrawings, Figure 1 is 17 isattached to the plate?) by being passed 7O a side elevation or' a release power-clutch emthrough an unthreaded opening in the stopbodying my improvements, a -portion of the lug 4. As shown, the nut 18 of the said bolt driven element being removed to show the bears on the outer side of the said stopconstruction of the coacting elements. Fig. shoulder. The head 19 oi' the bolt engages a e 2 is partly an elevation of the same at right thimble-washer 20, which bears against the 75 angles to Fig. 1 and partly a sectional view. outervend of spring 22, which is here shown Fig. 3 is a detail elevation, partly in section, as a coi-l extensile spring which is placed on the line' a a of Fig. 2, showing the co'enaround the bolt, the inner end of which gaging shoulder of the driver element and spring bears against the inner side of the the clutch-dog in full lines. lever or arm 11. The latter is by the action 30 The shaft 1 is the power or driving shaftl of the spring maintained normally in engageand is continuously revoluble. Loosely ment with the innerside of the stop-lug 4. mounted on the same is a driven element 2, The tension of the sp1-ing may be varied by which is here'shown as a sprocketwheel. appropriately adjusting the nut 18, as will .35 The same may be a pulley or gear wheel, and be understood. The outer end ot' the spring 85 I do not desire to -limit myself in this paris opposed to the inner side of the detent-arm .ticular. 8.and'is adapted to be engaged thereby by Rigidly fixed to the driving-shaft and revothe rotation ot' the clutch, the same being in n luble therewith is a plate 3, which may be of the direction indicated by the arrow in Fig. 1.

40 the form here shownl or of any other suitable Normally the shoulder 14 of vthe dog 12 is 90 -form and which is provided on the side oppoheld in engagement with the projection or site the driven element with a lug 4,.which shoulder 5 of the driven element 2 by the forms a stop. The driven element 2 is proouter end of the detent and releasing-arm 8 videdon its side whichis opposite to the being in contact with the cam-face 16 of the plate with -a shoulder'or projection 5, which shoulder 15. The power of the spring is equal 95 is provided 'on its front side with a cam-face to the load on themachine, andundernormal 6, the inner sidev of said shoulder or projecconditions when the machine is not overloaded tion being here shown as in the form of a the dog will be maintained in its engaged pocompound curve. v sition with reference to the driven element, Formed with a hub 7 on theplate 3 is an so that the latter will be driven continuously IOC with the driving-shaft l. In the event, however, that the machine becomes clogged by the lodgment of obstructions therein or becomes overloaded the additional stress applied to the spring 22 by the detent and releasingarm 8 will cause the spring to yield, so that the said arm will move past the shoulder l5 of the dog and will hence disengage the latter, and the said dog will become disengaged from the projection 5 of the driven element 2 by the eoaction of the shoulder 14 of the dog and the projection 5 of said element 2, hence releasing` the latter, so that it will not be rev- -oluble by the shaft 1, hence relieving the machine driven by the said driven element from all injurious stress and preventing the same from being broken or otherwise injured.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operationof the invention will be. readily understood without requiring' a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacriiicing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a revoluble driving element and a driven element revoluble independently thereof and having a clutch member, an element driven by the driving element and having a stop and a detent, a dog adapted to engage the clutch member of the driven element and adapted to be engaged and released by the detent, a pivoted element connecting the dog to the element which is driven with the driving element, a spring eoacting with the stop, and a detent to normally maintain the latter in such relation to the dog as to keep the dog in engaged position with relerence to the driven element, the said spring` being' adapted upon an overload to release the detent from the dog and permit the latter to disengage the driven element, substantially as described.

2. In combination with a driving-shaft, a plate fast thereto, revoluble therewith and having a stop, the plate being' further provided with a detent, an arm pivoted to the plate and carried thereby and adapted to bear against the said stop, a dog pivotally connected to the said arm, a spring between the latter and the detent and a driven element loosely mounted on the driving-shaft and having a clutch-stop normally engaged by the dog and maintained in engaged position by the spring and detent, substantially as described.

In combination with a driving-shaft, a plate fast thereto, revoluble therewith and having a stop, the plate being further provided with adetent, an arm pivoted to the plate and carried thereby and adapted to bear against the said stop, a dog pivotally connected to the said arm, a springbetween the latter and the detent, a driven element loosely mounted on the driving-shaft and having a clutch-stop normally engaged by the dog and maintained in engaged position by the spring' and detent, and means to vary the tension ol the spring, substantially as described.

In testimony whereotl l have hereunto set my hand in presence of two subscribing witnesses.

EDWARD llUBlCh.

lVitnesses:

JonN J. CnAwLnv, ED. K. CLARK, Jr. 

